Conditioner for flotation of coal
AssigneeThe Dow Chemical Company
InventorKenneth H. Nimerick
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Abstract
The froth flotation of coal is conducted in the presence of a conditioner of the condensate of naphthenic acid and an alkanolamine such as diethanolamine.
Claims16
A method for recovering coal which comprises the steps of floating coal in an aqueous frothing medium containing an amount of a condensation product of an alkanolamine and naphthenic acid. sufficient to increase the recovery of coal as compared to the recovery of coal in an identical proces using none of said condensation product.
A method of recovering coal which comprises the steps of floating coal in an aqueous frothing medium containing from about 0.001 to about 1.0 kilogram per ton of a coal flotation feed of a condensation product of an alkanolamine and naphthenic acid.
Dependencies are inferred from the claim text.